/*
 Language: Flix
 Category: functional
 Author: Magnus Madsen <mmadsen@uwaterloo.ca>
 Website: https://flix.dev/
 */

/** @type LanguageFn */
export default function(hljs) {
  const CHAR = {
    className: 'string',
    begin: /'(.|\\[xXuU][a-zA-Z0-9]+)'/
  };

  const STRING = {
    className: 'string',
    variants: [
      {
        begin: '"',
        end: '"'
      }
    ]
  };

  const NAME = {
    className: 'title',
    relevance: 0,
    begin: /[^0-9\n\t "'(),.`{}\[\]:;][^\n\t "'(),.`{}\[\]:;]+|[^0-9\n\t "'(),.`{}\[\]:;=]/
  };

  const METHOD = {
    className: 'function',
    beginKeywords: 'def',
    end: /[:={\[(\n;]/,
    excludeEnd: true,
    contains: [ NAME ]
  };

  return {
    name: 'Flix',
    keywords: {
      keyword: [
        "case",
        "class",
        "def",
        "else",
        "enum",
        "if",
        "impl",
        "import",
        "in",
        "lat",
        "rel",
        "index",
        "let",
        "match",
        "namespace",
        "switch",
        "type",
        "yield",
        "with"
      ],
      literal: [
        "true",
        "false"
      ]
    },
    contains: [
      hljs.C_LINE_COMMENT_MODE,
      hljs.C_BLOCK_COMMENT_MODE,
      CHAR,
      STRING,
      METHOD,
      hljs.C_NUMBER_MODE
    ]
  };
}
